Peatlands are known to perform essential economical, societal and regulating functions. Once they are drained to provide optimal crop growth conditions, however, a series of degradation processes is generated. Wind and water erosion, subsidence and soil organic matter oxidation are the main causes of degradation observed in cultivated histosols. This study evaluated the decomposition dynamics and chemical changes of three biomass crops during an in‐situ incubation in a cultivated histosol. The decomposition dynamics characterized in the field study were then used in a simulation to determine if sustainability could be reached by using biomass crops as a soil amendment. The results showed that an exponential decay fitting curve best represented the weight loss of sorghum [Sorghum bicolor (L.) Moench] in the in‐situ bags over time, while a logistic fitting curve best represented that of miscanthus (Miscanthus X giganteus) and willow (Salix miyabeana). The quality of the crop determined the initial and overall decomposition dynamics observed. The loss of carbon from the crushed biomass crop was much more important in sorghum than in miscanthus and willow. The long‐term simulation of histosol amendment revealed that using miscanthus and willow at input rates of 7.5 and 10 T of carbon per year, respectively, would be sufficient to ensure sustainability. Improving knowledge on carbon loss in cultivated histosols as related to soil and crop management would help in developing a soil amendment program at the farm scale. In addition, more knowledge is needed to determine the impact of long‐term and successive amendment with biomass crops on the physical and biochemical properties of histosols.

中文翻译：

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生物量作物作为耕作组织溶胶的土壤改良剂：我们能否达到碳平衡？

泥炭地被认为具有重要的经济，社会和调节功能。一旦将它们排干以提供最佳的作物生长条件，就会产生一系列的降解过程。风和水的侵蚀，沉降和土壤有机质的氧化是在培养的组织溶胶中观察到降解的主要原因。这项研究评估了在种植的组织溶胶中原位孵育过程中三种生物量作物的分解动力学和化学变化。然后，将在田间研究中表征的分解动力学用于模拟，以确定是否可以通过使用生物量作物作为土壤改良剂来实现可持续性。结果表明，指数衰减曲线拟合最好的表示的重量损失高粱[高粱（L.）Moench]随时间推移在原位袋中，而逻辑对数拟合曲线最好地代表了猕猴桃（Miscanthus X giganteus）和柳树（Salix miyabeana）。作物的质量决定了观察到的初始和整体分解动力学。压碎的生物量农作物中的碳损失在高粱中要比在桔梗和柳树中重要得多。长期模拟的组织溶胶改良剂表明，分别以每年7.5和10吨碳的输入速率使用黄花柳和柳树就足以确保可持续性。与土壤和作物管理有关的耕作组织溶胶碳损失知识的提高将有助于制定农场规模的土壤改良计划。此外，还需要更多的知识来确定生物量作物的长期和连续改良对组织溶胶的物理和生化特性的影响。